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The down-regulation of long non-coding RNA LINC01088 is associated with the poor prognosis of epithelial ovarian cancer patients.

OBJECTIVE: Long intergenic non-coding RNA 1088 (LINC01088) has been suggested to act as a tumor suppressor in epithelial ovarian cancer (EOC); however, the prognostic role of LINC01088 has not been evaluated in cancer patients. This study aimed to investigate the expression of LINC01088 in EOC, along with evaluating its clinical-pathological and prognostic importance.

PATIENTS AND METHODS: A bioinformatics tool (GEPIA) was used to screen the dysregulated lncRNAs. Quantitative Real-time PCR (qRT-PCR) was used to measure expression level of LINC01088 in EOC tumor samples and adjacent non-tumor tissues. Then, the association between LINC01088 expression and pathological parameters were further evaluated. Overall survival (OS) was estimated using the Kaplan-Meier method, and the differences in survival were compared using the log-rank test. Univariate and multivariate analysis were performed using the Cox proportional hazard analysis.

RESULTS: We found that LINC01088 expression was significantly down-regulated in EOC tissues via "GEPIA". Then, the results of RT-PCT confirmed that the expression levels of LINC01088 were significantly lower in EOC tissues compared to adjacent noncancerous tissues (p < 0.01). Interestingly, lower LINC01088 expression levels were associated with FIGO stage (p = 0.000), grade (p = 0.003) and distant metastasis (p = 0.006). Moreover, Kaplan-Meier analysis indicated that patients with low LINC01088 expression had a poor overall survival (p = 0.0013). Finally, univariate and multivariate analysis show that LINC01088 expression is an independent predictor for overall survival.

CONCLUSIONS: Low LINC01088 expression was associated with the progression of EOC and could serve as a potential independent prognostic biomarker for patients with EOC.

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